牙齿的

Precipitation of calcium phosphates in saliva is inhibited by an acidic phosphoprotein, statherin, which contains 43 residues.

人体的唾液是一种过饱和的磷酸钙溶液，可以给与牙齿很好的保护，但同时也容易在牙齿的珐琅质表面产生沉淀。

Yet in many vertebrate groups, teeth are not restricted only to the oral cavity, but extend posteriorly as pharyngeal teeth that could be derived either directly from the endodermal epithelium, or from the ectodermal epithelium that reached this location through the mouth or through the pharyngeal slits.

但在很多脊椎动物里牙齿的发育不仅只有上述来源，还有向后延伸形成的咽部牙齿，可能由内胚层上皮或经由口腔或口咽裂至此部位的外胚层上皮形成。

It cannot reasonably be maintained that a child''s mouth without teeth, and that of an adult, furnished with the teeth of carnivorous and graminivorous animals, are designed by the Creator for the same sort of food.

它不能合理地维持一个child'的嘴，没有牙齿，并且一个成人，家具与牙齿的食虫和graminivorous动物，是设计的创作者为同一类的食物。

Radiograph of teeth in mesiodistal direction were taken.

结果 ：单根单根管上颌第二前磨牙的根管弯曲仅有 2个，单根双根管牙齿的根管明显弯曲有 6个，在 2 8个双根牙中有明显根管弯曲的 6个，根管弯曲的牙齿总发生率为 6 。6 %(14 /2 13)。

Called Diagnodent, the $ 2,800 machine illuminates the tooth with a low-power red laser and measures whether the enamel glows, or luminesces, in response -- a sign of bacterial degradation.

这种机器被称作diagnodent，价值＄2，800，它可以用低功率的红外线照射牙齿，并且测出牙齿的珐琅质是否发热或发亮，这是细菌性降解的相应反应。

Once a tooth migrates the force on that tooth changes and this may promote further stress and further migration.

一旦牙齿迁移的力量，牙齿的变化，这可能促进更多的压力，并进一步迁移。

So adsorption of the cariogenic bacterium on the dental surface increased,incidence of the caries also possibly increasd.

口腔内带负电荷的致龋菌在牙齿表面的吸附增加，因而牙齿的龋患率可能也会相应增加。

Teeth 牙齿 The Perro de Presa Canario has a complete set of evenly spaced teeth, set in a wide jaw.

在佩罗日普雷萨Canario拥有一套完整的间隔均匀的牙齿，建立广泛的下颚。

The chose of tooth brush, tooth line as well as tooth paste are guided.

论述了牙齿对一个人的重要性、牙齿的健康以及护齿用品的作用。

In summary, we established a new model for investigating the functional reconstruction capability with dental pulp stem cells transplantation in vivo. We also revealed dental pulp stem cells from one deciduous tooth can be expanded in vitro which possibly can be utilized for teeth replacement therapy in the future.

总括来说，本研究建立了一个新的研究牙髓干细胞应用於牙齿再生治疗的模式，我们发现从乳牙中可以分离出牙髓干细胞，未来并可进一步应用来修复牙齿的缺损。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。